Low Oil Pressure

Ok, you guys helped me figure out the alternator issue, now there's this. First off, there's this constant tick-tick-tick coming from the engine. Then at idle, once the car warms up and idles down, the ticking gets louder and the oil light comes on. Just changed the oil, it's not low. Revving the engine even the slightest bit will make the oil light go out, but it comes back as soon as I get off the throttle. Oil light also comes on while driving once the TCC locks up and reduces the RPMs. Accelerating will extinguish the light momentarily. Any clues? Thanks for your help.

By the way, it's a 2.2L in a 2000 Cavalier

Anybody? I've had it with this car and I've barely even driven it! :(

i ahve the same problem with my girlfriends car and i was told it was the oil pump, so i am about to replace it.

Did changing the oil pump fix it?